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Rifles, Reloading, Optics, Equipment
Reloading
Weird Deformed brass
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<blockquote data-quote="MagnumManiac" data-source="post: 1965267" data-attributes="member: 10755"><p>Have had this happen twice with 2 different cartridges.</p><p>First was a 25 Pronghorn (25-300WSM) and the second was a 7RUM.</p><p>Both times was while working up loads with ZERO data, we were extrapolating from similar sized cases and using slow powders.</p><p>Each time was a few grains below what would be a middle load, not a start load. </p><p>It is definitely from under ignition, powder starts to burn but lacks enough pressure to give a progressive burn. If we used a faster powder, we would lock the bolt up. It was a difficult set of circumstances.</p><p>Increasing the powder charge or using a hotter primer helped us.</p><p></p><p>Cheers.</p></blockquote><p></p>
[QUOTE="MagnumManiac, post: 1965267, member: 10755"] Have had this happen twice with 2 different cartridges. First was a 25 Pronghorn (25-300WSM) and the second was a 7RUM. Both times was while working up loads with ZERO data, we were extrapolating from similar sized cases and using slow powders. Each time was a few grains below what would be a middle load, not a start load. It is definitely from under ignition, powder starts to burn but lacks enough pressure to give a progressive burn. If we used a faster powder, we would lock the bolt up. It was a difficult set of circumstances. Increasing the powder charge or using a hotter primer helped us. Cheers. [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
Weird Deformed brass
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